MBusino Nano quits after couple of hours

[filmgarage]

I am so close, but the Nano fails after a couple of hours. Strangely enough the values get published the first couple of hours after a reboot. But sometimes the value is wrong and defaults to an old value. When the meter stops publishing the values my Home Assistant sensor reports the same old default (wrong) value. I unchecked the auto discovery for HA to see if it would lower the load of the processor. But no luck. Only connected two out of five meters for now. And even with a template sensor the Nano gives up after a couple of hours of work. Here is a screenshot of the HA sensor:

Mbusino UI:

Template sensors:

mqtt:
  sensor:
    # ========== WARMTEMETER 1 ==========
    - name: "Warmtemeter 1 Energie GJ"
      state_topic: "Mbus12/MBus/SlaveAddress1/1_energy"
      unit_of_measurement: "GJ"
      device_class: energy
      state_class: total_increasing
      value_template: "{{ (value | float / 1000000000) | round(2) }}"
      unique_id: "mbusino_slave1_energy_gj"
      
    - name: "Warmtemeter 1 Energie kWh"
      state_topic: "Mbus12/MBus/SlaveAddress1/1_energy"
      unit_of_measurement: "kWh"
      device_class: energy
      state_class: total_increasing
      value_template: "{{ (value | float / 3600000) | round(2) }}"
      unique_id: "mbusino_slave1_energy_kwh"
    
    - name: "Warmtemeter 1 Volume"
      state_topic: "Mbus12/MBus/SlaveAddress1/2_volume"
      unit_of_measurement: "m³"
      state_class: total_increasing
      icon: mdi:water
      value_template: "{{ value | float }}"
      unique_id: "mbusino_slave1_volume"
    
    - name: "Warmtemeter 1 Aanvoer Temperatuur"
      state_topic: "Mbus12/MBus/SlaveAddress1/4_flow_temperature"
      unit_of_measurement: "°C"
      device_class: temperature
      state_class: measurement
      value_template: "{{ value | float | round(1) }}"
      unique_id: "mbusino_slave1_flow_temp"

    # ========== WARMTEMETER 2 ==========
    - name: "Warmtemeter 2 Energie GJ"
      state_topic: "Mbus12/MBus/SlaveAddress2/1_energy"
      unit_of_measurement: "GJ"
      device_class: energy
      state_class: total_increasing
      value_template: "{{ (value | float / 1000000000) | round(2) }}"
      unique_id: "mbusino_slave2_energy_gj"
      
    - name: "Warmtemeter 2 Energie kWh"
      state_topic: "Mbus12/MBus/SlaveAddress2/1_energy"
      unit_of_measurement: "kWh"
      device_class: energy
      state_class: total_increasing
      value_template: "{{ (value | float / 3600000) | round(2) }}"
      unique_id: "mbusino_slave2_energy_kwh"
    
    - name: "Warmtemeter 2 Volume"
      state_topic: "Mbus12/MBus/SlaveAddress2/2_volume"
      unit_of_measurement: "m³"
      state_class: total_increasing
      icon: mdi:water
      value_template: "{{ value | float }}"
      unique_id: "mbusino_slave2_volume"
    
    - name: "Warmtemeter 2 Aanvoer Temperatuur"
      state_topic: "Mbus12/MBus/SlaveAddress2/4_flow_temperature"
      unit_of_measurement: "°C"
      device_class: temperature
      state_class: measurement
      value_template: "{{ value | float | round(1) }}"
      unique_id: "mbusino_slave2_flow_temp"

[Zeppelin500]

Please see if MQTT Explorer shows the same? Is any MQTT output during this bad periods?
MBusino do not store anything, so it can't publish old values.

Are you able to read the serial output with Arduino IDE2? There are a lot of status messages.

[filmgarage]

MQTT traffic stops completely, I have no experience with reading serial output unfortunately...

[Zeppelin500]

OK, first check your power adapter. You need an adapter without intelligence. No PD or QC charger. They stop after a while because of the low consumption.

[filmgarage]

I'll do that. But I can still log in to the Mbusino webpage... So I guess it still works. Does that make sense? Or does it just need "more" power from the power supply?

[Zeppelin500]

Mhh, no, no sense :-)
The MQTT is dead but the GUI is reachable over your network?
1A power supply is more than enough.

[Zeppelin500]

Any progress?
There are hundreds of MBusinos in order without problems. At the moment I have no idea why you have problems.
I can guide you to read the serial output. It's no magic.
Are you sure that you can reach the GUI in this phases? Or is it just the cache of your Browser?